Thinking about the mitochondria and its importance for a cell, what is the chemical reaction, what happens and how is the energy/molecule made used?

oxygen and sugar/carbon dioxide, water and heat

carbon dioxide, water and heat/oxygen and sugar

carbon dioxide, water, light/oxygen and sugar

oxygen and sugar/carbon dioxide, water and light

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.

other information encoded in your genes might distinguish you from the others in the group

i think its both a and b